- Reaction score
- 10,209
Just been handed a PIR done on a local factory for pricing of remedials, Remedial item no'9 - DB2 prospective fault current too high.
Now having 160amp BS88(2) and a ELI of 0.14 which is well within acceptable levels - im totally scratching my head. To further this hes put for above item in his pricing that to improve external loop impedance an additional 16mm earth will need to be run with the 70mm-4core armoured. So as i clock this guys attempt to understand ELI -He thinks PSCC is too high so to rectify it hes adding additional earthing to lower impedance values which eeeerrrrmmm! will make it HIGHER!
The front end 160amp fuses are 80Ka capacity so again well above the 2.8ka hes measured. Have i hit that age where ive gone stupid here or what?:90:
Lastly this is on official NICEIC cert so im assuming hes passed his exams on self test.... understanding the basics tends to be a good start when testing me thinks.
Now having 160amp BS88(2) and a ELI of 0.14 which is well within acceptable levels - im totally scratching my head. To further this hes put for above item in his pricing that to improve external loop impedance an additional 16mm earth will need to be run with the 70mm-4core armoured. So as i clock this guys attempt to understand ELI -He thinks PSCC is too high so to rectify it hes adding additional earthing to lower impedance values which eeeerrrrmmm! will make it HIGHER!
The front end 160amp fuses are 80Ka capacity so again well above the 2.8ka hes measured. Have i hit that age where ive gone stupid here or what?:90:
Lastly this is on official NICEIC cert so im assuming hes passed his exams on self test.... understanding the basics tends to be a good start when testing me thinks.